华北地区干旱对中国主要农产品市场价格变动的影响预测

近30年来,随着气候干暖化现象日趋严峻,旱灾对农业生产的影响愈加受到关注。本文以部门均衡理论为基础,构建了一个用于分析并预测区域干旱对全国主要农产品市场价格影响的模型。基于该模型,并辅以中国统计年鉴与中国农业年鉴统计数据,本文分析、预测了在华北地区发生不同程度旱灾情景下的我国8种主要农产品市场价格变化。研究结果表明,华北地区干旱会对全国主要农产品市场价格产生一定的影响,但影响程度普遍较低。即便是在严重干旱情景下,全国各主要农产品市场价格的增幅也不会超过3.59%,不会影响我国农产品市场的正常运行。本文探索的方法及其结论为评估干旱对我国农产品市场的影响、制订防灾减灾规划、确保区域乃至全国主要农产品供给安全提供了一定的决策参考价值。     

基于Unicorn报表功能的图书利用率的调研统计分析

运用Unicorn系统的报表功能对天津师范大学图书馆的馆藏各类图书的种数、册数及平均复本数以及在5年内借阅频次较高和较低的各类图书的种数及其所属学科子类目进行统计。分析各类图书的使用情况,找出读者的借阅倾向,完善图书的复选工作,为今后图书的采购指明了方向。     

借阅藏一体化管理模式下读者违规现象及对策

针对借阅藏一体化管理模式下,存在于高校图书馆中常见的违规现象,提出了新的对策,尤其是提出了建立学生诚信档案的建议。     

浅谈高职院校图书馆拒借的原因及对策

高职院校图书馆产生拒借的原因是馆藏数量不足，馆藏结构不合理、管理制度不够完善、工作人员的素质有限等；对策是优化馆藏，完善相关管理制度，提高工作人员的素质，利用现代化的手段拓宽为读者服务的范围等。     

Science teachers' conceptions of teaching and learning,ICT efficacy,ICT professional development and ICT practices enacted in their classrooms

This study assessed several precursors that might be connected to Information and Communication Technology (ICT) practices enacted in classrooms, namely, science teachers' conception of traditional versus constructivist teaching and learning, their sense of efficacy, ICT efficacy, and ICT professional development. Data were gathered from 303 science teachers. According to the results, constructivist conceptions exerted moderate effects on the teachers' sense of efficacy constructs, which in turn increased their ICT efficacy. Additional results pointed to the positive mediation role of teachers' ICT professional development in linking their ICT efficacy to ICT use for constructivist activities in their science classroom.     

“十四五”图书馆基础服务的创新发展研究

[目的/意义]目前图书馆行业的管理与服务创新均以数字化、智慧化为主,但在这些业务快速发展的同时,切不可忽略图书馆基础服务的发展。[方法/过程]在广泛调研的基础上,结合信息技术的发展趋势对当前公共图书馆、学术图书馆基础服务的梳理,认为当前图书馆基础服务存在数字资源下载的方式不统一、纸电分别服务、基础服务缺乏必要的绩效评价机制、智能设备相对“弱智能”等问题。[结果/结论]提出“十四五”期间图书馆基础服务创新发展建议,为各图书馆“十四五”规划的制订提供思路,促进未来五年图书馆事业的进步。     

International education policy transfer – borrowing both ways: the Hong Kong and England experience

This paper analyses how the impact of international student achievement studies and the recent economic crisis in Europe are influencing the development of educational policy transfer and borrowing, from East to West. This is contrasted with education reform movements in East Asia, which have long legacies of borrowing from so-called ‘progressive’ discourses in the West. England and Hong Kong are used as case studies. Since 2010, England’s coalition government has prioritised its determination to look to jurisdictions like Hong Kong to inspire and justify reforms that emphasise traditional didactic approaches to teaching and learning. In contrast, Hong Kong’s reforms have sought to implement practices related to less pressured, more student-centred lifelong learning, without losing sight of strengths derived from its Confucian heritage culture. Conclusions highlight factors that underpin English interest in Hong Kong education policy, values and practice and point to the need for further attention to be given to these multidirectional and often contradictory processes by researchers concerned with the study of policy transfer.     

也谈文字的借用现象——读裘锡圭先生的《文字学概要》

裘锡圭先生将文字借用现象概括为形借、音借和义借。进一步研究,发现三种借用除了同义换读是本有其字的借用外,形借和假借都分两种类型:本有其字的借用和本无其字的借用。文字的借用,除了一部分是为了调整文字字形外,很大一部分是为了完善其表音表义作用,有时还对语用有所帮助,体现了文字与语言的密切关系。     

高校图书馆实行有借无还制度的可行性探讨

有借无还制度不仅能降低对滞架书和提存图书的管理成本,而且能使读者个人的文献需求得到极大的满足,提高图书经费的效益。本文探讨了对滞架书和提存图书实行有借无还制度的合理性、必要性和可行性,阐述了现阶段试行该制度可施行的一些具体措施,并揭示了该制度与目前在西方大学图书馆非常流行的无限期借阅制度的重要联系。     

一种噪声近似图像的质量区分方法

文中针对图像间质量差别微小而需评价的难题,提出了一种新的基于偏微分方程放大模型的全参考图像质量客观评价方法.算法利用偏微分方程在图像放大过程中能够较好地保持图像的边缘特征和细节信息的优点,通过比较放大后的图像加权峰值信噪比变化的情况,得出全参考图像质量评价指标-M_HPSNR.实验结果为类似的需要区分质量近似图像的需求提供了技术参考.